A world key to Cryptothecia and Myriostigma (Arthoniaceae), with new species and new records from the Andaman and Nicobar Islands, India Author Jagadeesh Ram, T. A. M. Author Sinha, G. P. text Phytotaxa 2016 2016-06-22 266 2 103 114 http://dx.doi.org/10.11646/phytotaxa.266.2.4 journal article 10.11646/phytotaxa.266.2.4 1179-3163 13659734 Cryptothecia aleurodes (Nyl.) Makhija & Patw. This pantropical species has been found in the evergreen forests in Great Nicobar Island of the Nicobar Islands . It is characterized by the whitish to whitish grey thallus; white, slightly raised, rounded to pustular ascigerous areas; 8- spored asci; 13–16 × 2–4 septate, 54–76 × 23–27 μm ascospores and norstictic acid as lichen substance. Specimen examined:INDIA . Nicobar Islands, Great Nicobar Island, Shompen Hut—Kopen Heat evergreen forest, 6°58’89.9” N, 93°51’62.4” E, alt. 30 m , 30.5.2014 , Jagadeesh Ram 3270A (PBL).